Earplug



FIG. 1 is a front elevation view of the earplug showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a sectional view taken along line 3--3 of FIG. 1;

FIG. 4 is a sectional view taken along line 4--4 of FIG. 1; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for an earplug, as shown and described. 